Hi Everyone, I'm new to the forum so I hope you'll bear with me. My wife and I have a 2001 Coleman/Fleetwood Sante Fe pop up. We do 97+ percent of our camping without electrical hookup. I would like to modify the popup and add a 12V cigarette recepticle to make it easier to use my BiPap machine. Should I try to splice into existing 12V wire or wire the cigarette recepticle back to the panel? I'm a complete novice when it comes to electrical/12V wiring. I think by upgrading my battery from a group 27 deep cycle to two 6V golf cart batteries that will help tremendously with added draw of BiPap. I need your help on all of it. Thanks in advance. We would like to take some longer trips this summer so I'll need to do my mods sooner rather than later.